CVE-2020-12402

Summary

During RSA key generation, bignum implementations used a variation of the Binary Extended Euclidean Algorithm which entailed significantly input-dependent flow. This allowed an attacker able to perform electromagnetic-based side channel attacks to record traces leading to the recovery of the secret primes. Note: An unmodified Firefox browser does not generate RSA keys in normal operation and is not affected, but products built on top of it might. This vulnerability affects Firefox < 78.

Affected Software

VendorProductVersion RangeStatus
MozillaFirefoxunspecified < 78affected

Weaknesses

  • RSA Key Generation vulnerable to side-channel attack

ADP Enrichment

CVE Program Container

Additional References

References